Does anyone know how to rewire the telephone box so that we can use a phone jack in another room of the house?
If you google it, you'll find better details, but I know if you take the phone jack out and look at the wires, theyll be a series of colored wires. The secondary line will be a combination of those two wires. Just be warned though that telephone wires are live, so once you strip them, be careful or youll get a buzz.